Prepare to switch beam from 22Ne2+ to 20Ne1+. Skimmers from 22Ne2+ run shown below. Table of tune options below. We will be using the Rick Tune.

Device	Present Tune	Scaled	Scaled		Rick Tune	Scaled		Web Tune	Final
	22Ne2+	20Ne2+	20Ne1+		25Mg1+	20Ne1+		20Ne1+	20Ne1+
IOS:BIAS:VOL.VAL	22440	20400	40800		51000	40800		40800	40800
IOS:EE:VOL.VAL	1072	975	1949			3064		3064	1419
IOS:EESS:VOL.VAL	1810	1645	3290			0		0	0
IOS:XCB1:VOL.VAL	225	205	409			0		0	500
IOS:YCB1:VOL.VAL	268	244	487			0		0	140
IOS:CCB1:VOL.VAL	500	455	909			0		0	500
IOS:B1A:POS:VOL.VAL	3301	3001	6001			5693		5693	5933
IOS:B1A:NEG:VOL.VAL	3845	3496	6991			5693		5693	5933
IOS:XCB1AW:VOL.VAL	1658	1507	3014			4362		4362	3660
IOS:XCB1AE:VOL.VAL	2242	2038	4076			4362		4362	3660
IOS:YCB1A:VOL.VAL	412	375	749			0		0	340
IOS:Q1:POS:VOL.VAL	1215	1104	2208		-2425	-1940		0	1113
IOS:Q1:NEG:VOL.VAL	1215	1104	2208		-2425	-1940		0	1113
IOS:Q2:POS:VOL.VAL	148	134	269		-1115	-892		1428	892
IOS:Q2:NEG:VOL.VAL	148	134	269		-1115	-892		1428	892
IOS:Q3:POS:VOL.VAL	786	715	1429		0	0		2570	0
IOS:Q3:NEG:VOL.VAL	786	715	1429		0	0		2570	0
IOS:YCB3:VOL.VAL	397	361	721			0		0	500
IOS:MB:CUR.VAL	148	135	270			280		280	277
IOS:YCB4:VOL.VAL	316	287	575			0		0	470
IOS:CCB4:VOL.VAL	300	273	545			0		0	300
IOS:Q4:POS:VOL.VAL	1384	1258	2516		1333	1067		3392	1067
IOS:Q4:NEG:VOL.VAL	1384	1258	2516		1333	1067		3392	1067
IOS:Q5:POS:VOL.VAL	1254	1140	2280		0	0		2232	0
IOS:Q5:NEG:VOL.VAL	1254	1140	2280		0	0		2232	0
IOS:Q6:POS:VOL.VAL	0	0	0		3225	2580		0	2580
IOS:Q6:NEG:VOL.VAL	0	0	0		3225	2580		0	2580
IOS:YCB6:VOL.VAL	290	264	527			0		0	300

Saved tunes: 100518_1113.snapiosfc6 (strict) & 100518_1128.snapiosfc6 (tweaked). Emittance scan attached.

At noon, beam handed over to Sophia. She has questions about the defeats associated with the Q3 failure last year. Checking... done.

Summary of Q1/2/3 wiring status right now:

• Defeat remains on Q1.
• Q1+/- cables swapped at power supplies.
• Q2 output is normal (+ drives L/R and - drives T/B) and is opposite to Q1 and Q3.
• Q3 output is normal (+ drives T/B and - drives L/R).
• All wiring at DBs is normal.

Sophia is continuing her tuning using IOS tune as provided.

Later... Sophia reports that this beam transports nicely. That said, the IOS tune is a little different now. Compare attached below.

EOB for SEBT1 run at 08:30, taking 11Li from ITE and 22Ne2+ from OLIS when needed. Attempted emittance scans last evening, but no data showed, and no more time to investigate. So be it. Another time.

Last day of this pilot beam to TUDA-II. Expect a beam switch tomorrow for sake of TIGRESS.

Attached is Stripchart of weekend beam operation. Pretty nice indeed. Top trace (red) is Q3 skimmer, representative of total beam out of the source  Blue trace is 22Ne2+ on FC6 with magnet field stabilization program active. Brown trace is NA-LCW temperature as measured at exit of Supernanogan plasma chamber. Note an inverse trend against ambient temperature. Something to investigate at some point.

MWS continues to provide 22Ne2+ for pilot beam use. Beam quietly sitting on FC6. Stripchart attached. Also, Supernanogan plasma is on at low RF power for conditioning.

Beam continues to be reserved for E1147 pilot beam use. Beam was nice and stable overnight, as expected. Beam (blue) followed source (red), independently of ambient temperature, roughly reflected in the nearby Supernanogan plasma chamber temperature (maroon).

Later... at 10:14 today there was a sitewide power bump due to an HPL test. It tripped the cyclotron and one isolated ISAC ion gauge. The ICR operators saw the bump in the lights. OLIS went through it transparently, a fruit of a Maintenance a few weeks back.

Later... at around 17:00 I started the Supernanogan plasma. It is at low RF power for conditioning. HV is off.Gate valve into IOS remains closed.

Back to pilot beam status as of around 18:00 last night. A couple of sideshows through the evening. ICR made an elog entry about the IOS:MB field stability program here. But the information shown is inconclusive. As noted in a work permit, Magstab is in fact using our own Hall probe for reference. Unlike the EPICS Hall probe, ours is temperature-compensated. So two outcomes are certain:

1. The EPICS field will vary substantially as ambient temperature changes throughout the day.

2. A/q will vary by a proportionate amount, because it uses the EPICS field value in its calculation.

During the day today, ISACEPICS1 went down for a while, as seen in the attached Stripchart. On that same chart, you can also see the real stability of the separated beam. It varies directly as a function of the source itself, visible in the Q3 skimmer.

Later... Stability program is following source just about perfectly. Updated Stripchart (blue = FC6, red = Q3 skimmer) attached.

Leak checking on the Supernanogan continues today. We are preparing for an up-coming 33S run, for which we want "perfect" vacuum. We're close.

Later... MCIS backing line is now running on leak detector only. Calibration in progress... Done.

There was a short MCIS vacuum excursion at ~09:15. There were two similar ones overnight. Probable cause: sealant outgassing.

Later... MCIS leakcheck tested excellent. Our fix was good, and there were no signs of a leak after all in the bellows area. We are good to go.

Next item: IOS leakcheck if possible. At somepoint we also want to test out the solid target tube on the MCIS plasma chamber.

Later... IOS leakcheck in progress. Leak found at water feedthroughs on DB3 and touched up with same sealant as above. Sealed. Continuing down the line...

Later... We determined a small leak on the top flange of IOS:DB6, which we were able to help from outside. We also observed a significant gas loading from downstream of IOS:IV7. It is indeterminate at this time whether or not there is a specific leak. However, we also observed a fairly high pressure downstream of ILE:IV6. Closing that valve, however, had no effect at IOS.

At about 16:45, Colin requested beam for an energy check. We are doing a last leakcheck between IOS:MB and IOS:IV7 before we close it down and prepare for beam.

At 1about 17:15, MWS lit. >2enA of 22Ne2+ on FC6.

By agreement, the source came down this morning for continuing Supernanogan development. Main event: leak detecting.

Later... Robert and Tim lead leak detectors. Synopsis: A minute leak at waveguide flange on plasma chamber. We decided to seal it with a drop of vacuum sealant. Worked like a jet. Once Supernanogan beams are done for this beam schedule, we will remove the waveguide and re-machine and weld the flange. We also believe there is a minute leak at the bellows joining MCIS and IOS. TBC.

Supernanogan development, mainly for the sake of the upcoming 33S run, took place for a little while on Friday. It was expected to go through tomorrow (Tuesday), but we got the call for beam on Friday evening just before the Canucks game started. So it's up again. The beam was used for a while on Sunday to check beam energy.

Supernanogan development for 33S started. All MW and MW and MCIS power sypplies are off.

Gas for microwave source also closed from hand valve

Later... separator field stability development. Local Hall probe is online. Let it cook.

Beam from MWS remains quietly sitting on FC6, on standby for pilot beam use to SEBT1. The cyclotron is still down with cryogenerator issues. Latest prediction is first protons this evening.

Beam on standby for pilot beam. Cyclotron is still down with vacuum troubles since ~03:00, so no RIB to ISAC.

Beam from MWS continues for pilot beam use into SEBT1. There are cyclotron issues with cryogenics, so 11Li delivery from ITE is suspended temporarily.

Later... we purchased a small UPS for the MCISRFIOC server. It arrived yesterday. After overnight charging, we installed it today. This is in response to the hardware failure a couple of weeks ago.

Beam was switched on Friday morning from 16O1+ to 22Ne2+. This time it's a pilot beam for a 11Li experiment.

Mid-morning the source was switched over from 16O1+ to 22Ne2+ operation for a new experiment. OLIS will be used as the pilot beam during this 11Li run to SEBT1/TUDA-II.

Delivery to S1151 went quietly overnight for their last few hours. The run ended at ~08:30 as scheduled. Marco and ICR did some EOB checks. Also, a quick EOB emittance scan is attached. There were problems with the beam tune save files, since resolved. Among the last ones are 100430_0918.snapiossebt2 (missing SEBT optics) and 100429_2023.snapiossebt2.

Another quiet night of beam to S1151.

Beam delivery continued nicely through the night.

Yesterday Controls repaired and reinstalled the MCISRFIOC computer. It is working well. More details to come.

Nominal beam operation to SEBT2 overnight. A chart of beam over the last few days is attached. There is a step change in the separator field right around midnight. Although the archive does not show it, in fact this was adjusted at 23:54 last night.

Later...MCISRFIOC PC up again, with many thanks to Shawn @ Controls. The black MCISRFIOC computer, atop of the IOS racks, was found to be dead a few days ago. We originally thought that this was a consequence of last Monday's power bump. However, the attached archive plot suggests that it in fact failed on April 21st. Controls confirmed extensive hardware damage, and rebuilt the machine. It is up again now, and operational as it was before. I ran the MCIS RF and did an RF scan for good measure. It all works.